Pieced-stay-joining machine.



F. L. ANDERSON. D STAY JOINING MACHINE.

APPLICATION FILED JAILZS 1910- RENEWED NOV. 20, 19H.

PIECE 2 SHETS-SHEET I.

Patented Aug. 3, 1915.

F. L. ANDERSON. PIECED STAY JOINING MACHINE. APPLICATION FILED IAN-25,I910- RENEWED NOV-L191!- Patented Aug. 3, 1915.

2 SHEETSSHEET 2- said bracket 24 and a collar 26 on the rod.

bracket 24 when said rod is. to act as an adjustable stop to limit theforare mounted on the bed, directly inthe' rear.

the ,length of the piece" to be severed, the;

length of the piecewhi'ch will be severed being indicated by theposition of the nut A nut 27 is threaded on the;extreme end of the rod,said nut being ada ted to engage awn forward ward swinging of the bar 18and thus vary 27 on a scale 24. v

A cam 28 is mounted on the carrier 4, and a roll 29 is rotatably mountedon the bar 18 in position to engage said cam, said spring 25. actingconstantly to hold the rod against said cam in all vertical positions ofthe carrier. The upper portion of the cam 28 is inclined 'so that itextends upwardly '29 is adapted to move when the carrier is in itshighest pr normal position.

A work-supporting bed 's provided directly beneath the head 5, whichconsists of 2. rubber block 30 set in.a recess formed in the table ofthe machine.

In the power-driven device of my said former patent I found it necessaryto employ a yielding pressing member to enable the reciprocating presseror plunger to press the severed piece against the stay piece for asufficient length of time to cause the tape to adhere to thestay-pieces. However, with the treadle-operating machineherein-described the presser-head may be held in engagement with thework as long as is necessary, so that it is only necessary to provide aslightly resilient bed, adapted .to yield sufficiently, when pieces ofunequal thickness are ,connected, to permit pressure' bed. herein shown,however, the accurate po sitioning of the pieces beneath the presserheadis unnecessary.

A foot 32 is mounted to reciprocate ver-. tically in a bracket 33,mounted on the table ofthe machine, said bracket being provided with aspring-pressed friction-plate 34, which is adapted to hold said foot 32in any vertical position to which it may be moved.

A bracket 35 is mounted on the carrier 4;

and a rod 36 is connected to said foot' 32 'vionsly been placed on thebed 30. As the ered portion against said pieces, so that the chamber 4"in the carrier, said rod having a spring-buifer 37 at its lower end,which rests on the upper end of the foot 32, and a 1 head 38 at itsdipper end, whichretains a spring-butler 39. f

A pair of vertically-projecting fingers 40.

of the shear-blade 16, said fingers terminating slightly below the levelthereof, andi -js the lower end of said foot 32 is provided; with aprojecting toe 32, which is disposed.

its front. en ,is adjustably mounted on the bed in the rear of the'fingers 40, said teeth being slightly upturnedv and beveled on their undersides, so that when the tape is pressed downon said fingers 40, by saidtoeportion 32', said teeth will be caused to pierce the tape to a slightextent. I

The operation of the above-described device is as follows: The bar 12 isdrawn downwardly by a treadle, depressing the carrier 4,ascdescribedfabove, and, as said carrier is moved downwardly, theinclined portion of the cam 28 will-be carried oppo. site the roll 29,so that the spring. 25 is per- 'foot 32 will at that time be" in raisedposition, and the gripping-dog 21, on the lower end of the bar 18,willdraw the tape 13' i from thef reel 14, over the moistening-roll 15,and push the end-portion thereof, assuming that the tape has beensevered by the shear in the previous operation, beneath said foot, overthe shear-blade 16, into position over the stay-pieces which haveprecarrier 4 descends, the shear-blade 17 will sever a portion of thetape of sufficient length to extend across the pieces to be connected,and the head 5 will-press said sevtape will be caused to. adhere firmlythereto. As the carrier descends, the-bracket 35 will engage. the upperend of. the foot 32, through the medium ofthes ring b'ufler 37, so thatthe tape will .be clamped 116 against the fingers 40, the spring 37-being' adapted to yield to a suflicient extent to compensate foranyvariations in thickness of the pieces to be connected, or 'iorinaccuracies of adjustment," When the carrier 4 is again raised, thefriction-plate 34' will hold the foot 32 in a depressed position din ingthe greater portion of the lifting move ment of the carrier, duringwhich time the tape will be firmly clamped against the bed. As thecarrier is lifted, the cam 28 will push back the swinging-bar 18, sothat'the griping-dog '21 will ride over the/ta e," as itis eld irombeing drawn back by'rt '0 too 32'. The parts are so timed that, whenthe' u'o' higher end of the inclined portion of the cam 28 engages theroll 29, so that the bar 18 is swung rearn'ardly '3 its full extent. thebracket 35 will engage the spring 39 and draw the foot 32 upwardly outof engagement with the tape. Atihe end of the upward movementof thecarrier, the depressed porfion 28 of the cam will be oppo site the roll29, so that she spring will iorce'said roll into said recess 28 and thusswing forward the bar 18, causing a slight forward feeding of the tape,the purpose of which is as follows: If the tape, after having beenpressed firmly, against the. lingers 40 by the foot 32., were permittedto remain in that position for an appreciable length of time, it wouldadhere to the bed, so that, when the next operarion was performed, thefeeding means would be prevented from pushing the tape forwardly, but,as the slight forward feeding movement, above re ferred to, talves placeat the end of the operation, the portion of the tape which was pressedagainst the fingers 40 will be moved out of engagement therewith beforeii; has time to adhere, so that it will then rest lightly on the edge ofthe shearblade 1G and will not adhere thereto. even if permittted toremain in this position until the cement thereon becomes dr v. As thearea of +he surface at the ends of the lingers 40 is small, there is butslight possibility that the tape will adhere thereto to an appreciableextent before the slight feeding motion. above described, takes place.As the plate .41 is so adjusted lhat its-teeth vill pierce the tape to aslight extent. when the foot 32 presses the latter against the bed, ifthe foot should not securely hold the tape, or it" the foot should bemoved out of engagement with the tape before the rearward swingingmovement of ihe bar 18 was finished. said teeth would prevent the tapefrom being drawn back by the gripping-dog 21, thereby obviating thepossibility of irregular feeding of the tapel It will be apparent thatthe distance which the tape is fed on each recipro 'ation of thecarrier, and, therefore. the length of the severed piece may be readilyvaried by merely adjusting the nut :27, and the position to which itshould be adjusted for stays of different widths may be readilydeiermined by its position with relation to the scale 24;.

I claim: o

1. In a stay-joining machine. means for severing and pressing a piece ofadhesive tape against the work, means for intermittently feeding thetape to said severing and pressing means, comprising a gripping device,adapted to engage the tape to feed the same when moved in one direction.holding means for engaging the tape during the re tracting movement ofsaid gripping device,

\vork-siipporiing member and a pr means for releasing said holding meansfrom the tape at the end of said movement, and means for thereaftermoving said gripping device to free the tape from said holding means,substantially as described.

2-. In a slaw-joining machine, means for severing and pressin a piece ofadhesive tape against the Work, means for intermittently feeding theiape to said severing and pressing means, comprising a gripping deviceadapted to engage the tape to feed the same when moved in one direction.means for holding the tape during the retracting movement of said grip'iing device, and means for slightly advancing the tape after thefeeding'operation has been finished to free the same from said holdingmeans. substantially as described.

3. in a stay-joining machine, a ivorlosupporting member and a pressingmember movable to and from ihc same. a gripping device movable to andfrom said members to feed an adhesive tape thereto and adaplml to gripthe tape on iis feeding movement and to become disengaged iherel'rom oniis retracting movement. a clamping device for holding he tape duringsaid retracting movement and adapted to be released therefrom at the endof said movement. and

means for advancing the gripping device to scribed.

4. In a stay-joining machine, having a me member movable lo and from thesame. a grip 'ling device movable to and from said members to feed anadhesive lape thereto and adapled to grip the tape on its feedingmovement and lo become disengaged there from on its retracting movementa clamping device for holding the tape during said retracting movementand adapted to be re leased therefrom at the end of said movement, aspring normally acting to move said gripping device to perform thefeeding op- \vork-supporting menmer and a pressing.

member reciprocally movable to and from the same, means for inlermiitcnllv feeding a tapeto said members. comprising a gripping device adaptedto engage the tape to feed the same as the pressing member is movedtonard the supporting member, and to be disengaged from the tape on there tracting movement of said pressing member,

cration. mains, actuated by said pressing a tape-clamping devicesupported'independently of said pressing member and movable -thereby toengage the tape at the end of the feeding movement thereof, means forholding said clamping device in engaging position during the firstportion of the retracting movement of said pressing member,and

means, actuated by said pressing member,

during the latter portion of said retracting movement, for moving saidclamping device to disengage the tape, substantially as described.

6. A stay-joining machine having, in combination, means for pressing asevered piece of adhesive tape against the work, mechanism to feed theadhesive tape, means to' sever said piece from said tape prior to thepressing operation, and means for imparting to said tape a slightforward movement after the severing operation and prior to thesucceeding feeding movement.

7. A stay-joining machine having, in combination, means for pressing asevered piece of adhesive tape against the work, means I forseveringsaid piece, mechanism for feeding the adhesive tape prior to thesevering operation, and meansvactlng through said feeding mechanism forimparting to said tape a slight movement to disengage the tape from saidsevering means prior to the succeeding feeding movement.

8. Astay-j oining machine having, in combination, means for pressing asevered piece of adhesive tape against the work, means in-' cluding astationary and a movable member for severing said tape with the adhesivesurface of the tape in contact with the stationary member, mechanism forfeeding said tape a predetermined distance between the feeding movementis started.

severing operations, and means for movingilo said tapeslightly withrespect to said statlonary severing member after the movable;

severing member has been moved away from the stationary member andbefore the next f feeding movement is started. 4t

9. A stay-1 oimng machine'having, in combination, means for pressing asevered piece of adhesive tape agalnst the work, means 'ineluding astationary and a movablemember I for severing said tape with theadhesive sure;

face of said tape in contact with the stationary member, mechanism forfeeding said tape a predetermined distance between'the' severingoperations, .and means acting through said feed mechanism formovinigfili said tape slightly with res ect to'saidstationary severing member ar the=inovable severing member has been moved away from I the stationarymember and before the next 10. A stay-joining machine having, in @015;

bination, means for severing a piece of tape,

of two subscribing witnesses. 1,

FREDERICK L. ANDEBSOKc'} Witnesses:

L. H. HARRIMAN, H. B. DAVIS.

